Magnetoelastic phenomena in antiferromagnetic uranium intermetallics: The 
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 case

Vališka, Michal; Saito, Hisayasu; Yanagisawa, Tatsuya; Tabata, Chihiro; Arima, Hiroshi; Uhlířová, Klára; Prokleška, Ján; Proschek, Petr; Valenta, Jaroslav; Míšek, M.; Gorbunov, D. I.; Wosnitza, J.; Sechovský, V.

doi:10.1103/physrevb.98.174439

Cited by 8 publications

(4 citation statements)

References 64 publications

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“…在层间反铁磁排列的CrCl 3 中, 报道了声波驱动的自旋波共振, 展示了具有低功耗优势的声波技术与范德瓦耳斯材料优异的机械性能之间的有效结合 [127] . 晶体反铁磁中的磁弹耦合现象也被观察到 [128,129] , 因此可以期望在太赫兹频率下实现反铁磁的声学共振激发, 从而使用太赫兹声波进行太赫兹自旋泵浦 [130,131] . 除了磁性材料体系的拓宽, 磁声耦合的基础物理也值得探索, 包括强的磁子-声子耦合 [49,132] 、杂化的磁声准粒子和凝聚态 [133] 、磁性声学超材料和声子晶体中声波的传输特性 [134] 等.…”

Section: 磁电天线unclassified

Magneto-acoustic coupling: Physics, materials, and devices

Chen,

Ma,

Pan

et al. 2024

Acta Phys. Sin.

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Acoustic waves in solids have two modes of propagation: the bulk acoustic wave (BAW), which propagates inside solids in the form of longitudinal or transverse wave, and the surface acoustic wave (SAW), which is generated on the surface of solids and propagates along the surface. Acoustic radio frequency (RF) technologies utilize acoustic waves to intercept and process RF signals, which are typified by the rapidly developing RF filter technology. Acoustic filters have the advantages of small size, low cost, steady performance and simple fabrication, and are widely applied in mobile communications and other fields. Due to the mature fabrication process and well-defined resonance frequency of acoustic devices, acoustic wave has become an extremely intriguing way to manipulate magnetism and spin current, with the goal of pursuing miniaturized, ultra-fast, and energy-efficient spintronic device applications. The integration of magnetic materials into acoustic RF devices has also provided a new way of thinking about the means of acoustic device modulation and performance enhancement. This review firstly summarizes various physical mechanisms of magneto-acoustic coupling, and then based on these mechanisms, a variety of magnetic and spin phenomena such as acoustically controlled magnetization dynamics, magnetization switching, magnetic domain wall and magnetic skyrmions generation and motion, and spin current generation are systematically introduced. In addition, the progress of research on magnetic control of acoustic wave, the inverse process of acoustic control of magnetism, is discussed, including the magnetic modulation of acoustic wave parameters and nonreciprocal propagation of acoustic waves, as well as new magneto-acoustic devices developed based on this, such as SAW-based magnetic field sensors, magneto-electric antennas, tunable filters, and so on. Finally, possible future research goals and applications of magneto-acoustic coupling are envisioned. In summary, the field of magneto-acoustic coupling is still in a stage of rapid development, and a series of groundbreaking breakthroughs have been made in the last decades, and this paper summarizes the major advances in this field. The field of magneto-acoustic coupling is expected to make further significant breakthroughs, and we hope that this review will further advance the physical phenomena of the coupling between magnetism and acoustic wave, spin and lattice, as well as the potential device applications.

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Section: 磁电天线unclassified

Magneto-acoustic coupling: Physics, materials, and devices

Chen,

Ma,

Pan

et al. 2024

Acta Phys. Sin.

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“…The 5 f electron systems with their multiplicity of states of matter, conventional and unconventional, competing for stability is a natural ground for the presence of classical and quantum multicritical points. Recently, there have been several observations in these systems that indicate classical tricritical points (TCPs) as, for instance, USb 2 [1], UN [2], UAu 2 Si 2 [3] and URu 2 Si 2 [4] when a magnetic field is applied. An other example is the presence of a classical bicritical point (BCP) that appears in URu 2 Si 2 when hydrostatic pressure is applied, which is related to the competition between the puzzling hidden order and an antiferromagnetic phase [5].…”

Section: Introductionmentioning

confidence: 99%

Multicritical points in a model for 5f-electron systems under pressure and magnetic field

Faundez

Magalhães

Calegari

et al. 2021

J. Phys.: Condens. Matter

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We investigate the evolution of multicritical points under pressure and magnetic field in a model described by two 5f bands (called α and β) that hybridize with a single itinerant conduction band. The interaction is given by the direct Coulomb and the Hund's rule exchange terms. Three types of orderings are considered: two conventional spin density waves (SDWs) and an exotic SDW, i.e., with no magnetic moment formation. The conventional SDWs phases, are characterized by, where m α f and m β f are the intraband staggered magnetizations. The exotic SDW, which has time reversal symmetry, is described by a purely imaginary order parameter. This phase is related to a band mixing given by the spin-flip part of the Hund's rule exchange interaction. As result, without magnetic field, the phase diagrams of temperature (T) versus pressure (given by the variation of the bandwidth (W)) shows a sequence of phase transitions involving the three phases which gives rise to multicritical points. The presence of the magnetic field (h z ) has drastic effects on part of the phase diagram and the location of the multicritical points.

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“…Moreover, it is well known that these states can be tuned by pressure (hydrostatic or chemical) and magnetic field [10,11]. This imposes a requirement on any comprehensive microscopic model for 5f -electrons that it should describe the appearance and evolution of quantum conventional, unconventional or even exotic collective states [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Magnetic transitions induced by pressure and magnetic field in a two-orbital $5f$-electron model in cubic and tetragonal lattices

Lausmann,

Calegari,

Faúndez

et al. 2021

Preprint

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We investigate the onset and evolution of under the simultaneous application of pressure and magnetic field of distinct itinerant Néel states using the underscreened Anderson Lattice Model (UALM) which has been proposed to describe 5f -electron systems. The model is composed by two narrow f -bands (of either α or β character) that hybridize with a wide d-band and local 5f -electron interactions. We consider both cubic and tetragonal lattices. The Néel order parameters φ β and φ α are assumed to be fixed by an Ising anisotropy. The applied magnetic field hz is parallel to the anisotropy axis. It has been assumed that the variation of the band width W is sensitive to pressure. In the absence of a magnetic field, the increase of W takes the system from the phase AF1 to another phase AF2. The phase AF1 occurs when φ β > φ α > 0 while in the AF2 phase the gaps satisfy φ α > φ β > 0. In the presence of a magnetic field hz, the phase AF2 is quickly suppressed and reappears again at intermediate values of the magnetic field while it is predominant at higher magnetic fields. The analysis of the partial density of states close to the phase transition between the phases AF1 and AF2, allows a better understanding the mechanism responsible whereby the transition is induced by an increase in the magnetic field. As a important general result, we found that the magnetic field hz favours the phase AF2 while the phase AF1 is suppressed. For the tetragonal lattice, the phase AF2 is even more favored when hz and c/a increases concomitantly, where c and a are the lattice parameters.

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Magnetoelastic phenomena in antiferromagnetic uranium intermetallics: The UAu2Si2 case

Cited by 8 publications

References 64 publications

Magneto-acoustic coupling: Physics, materials, and devices

Magneto-acoustic coupling: Physics, materials, and devices

Multicritical points in a model for 5f-electron systems under pressure and magnetic field

Magnetic transitions induced by pressure and magnetic field in a two-orbital $5f$-electron model in cubic and tetragonal lattices

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